package leetcode.backtrace;

import leetcode.backtrace.common.BackTraceUtils;

import java.util.List;

class Solution17 {
    public List<String> letterCombinations(String digits) {
        return BackTraceUtils.letterCombinations(digits);
    }
}

public class leetcode17 {
    public static void main(String[] args) {
        Solution17 solution17 = new Solution17();
        String digits = "23";
        String digits1 = "";
        String digits2 = "2";
        System.out.println(solution17.letterCombinations(digits).toString());
        System.out.println(solution17.letterCombinations(digits1).toString());
        System.out.println(solution17.letterCombinations(digits2).toString());
    }
}
